I want to test a Constant Current LED Driver across its voltage range without using a LED for test purpose.
How can I clamp the output voltage of this driver to required voltage levels?
For Example –
LED Driver Ratings – 800mA Constant Current Voltage Range – 17V to 34V.
Now how do I test this driver at 17V, 18V etc to make sure this driver works under different voltages.
I also tried to clamp the voltage using an Op-amp but in vain. I am not sure if output voltage is stiff enough to clamp LED driver output voltage. Also, current is getting drawn from the output of Opamp whereas opamp is primarily used to just clamp the voltage.
Any thoughts on how this can be achieved?